There's another workaround to get the games installed easily, but you need the xinput9_1_0.dll file after you do this workaround: first download the attached file I uploaded on Mediafire
(includes the xinput9_1_0.dll file and installation), Unzip/extract the file I uploaded to your Desktop, open the program called R2ConvGUI.exe (yes, this works with the 64-bit version as well), go to the Packs tab, tick the following boxes: Games Explorer and Windows 7 Games, click on Apply Selected Items. An error might occur (1 to 2 chance), but click OK, and click Reboot after the installation, just in case, or reboot later on. Then, go to the xinput directory/folder, double-click on install.bat (opens in Windows PowerShell) and hit any key to install the xinput9_1_0.dll file (works for both x86 and x64 versions of Windows Server 2008 R2) and hit any key to exit. After that, restart your server/machine for better results.